PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6661Electron Tube

Electronic Industries Association · NSN 5960-00-685-8998 · FSC 5960 · No Item Name Available
Verified by PartsTable
NSN 5960-00-685-8998 — this item is cataloged by the U.S. Government under National Stock Number 5960-00-685-8998. Primary manufacturer part number: 6661.
Features
  • Electron Tube — FSC 5960
  • Nondefinitive Spec/std Data: 6661 TYPE
  • Tube Type: PENTODE
  • 1 verified cross-reference
  • Primary manufacturer: Electronic Industries Association
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Electron Tube, cataloged under National Stock Number 5960-00-685-8998, is classified within Federal Supply Class 5960 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Electronic Industries Association. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5960-00-685-8998
Primary Part Number6661
Item NameElectron Tube
FSC / FSG5960 / 59 — No Item Name Available
ManufacturerElectronic Industries Association
StatusCANCELLED
Nondefinitive Spec/std Data6661 TYPE
Tube TypePENTODE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5210-00-083-0288599-9642-10 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
3930-00-145-6366 INTERCHANGEABLE
Block,slide
3020-00-448-09926661 INTERCHANGEABLE
Gear,internal
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
6532-00-914-3069X610NTZS-CA INTERCHANGEABLE
Shirt,operating,surgical
Medline Industries, Lp
5935-01-184-259146-619730 INTERCHANGEABLE
Adapter,electrical Plug,quick Di
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
4820-01-225-22996661 INTERCHANGEABLE
Piston,valve
Imi Cash Valve Inc
6505-01-255-90276661 INTERCHANGEABLE
Mexiletine Hydrochloride Capsule
Boehringer Ingelheim Pharmaceuticals Inc
4020-01-352-27293316661 INTERCHANGEABLE
Rope,fibrous
Plymkraft, Inc. Dba Plymkraft Inc Div Columbian Specialty Products Div
6515-01-372-88172970006713 INTERCHANGEABLE
Heel Cup,orthopedic
Alimed, Inc. Dba Alimed Inc
5340-01-663-6109777-1 INTERCHANGEABLE
Holder,door
Eastern Co Div Eberhard Manufacturing
Cross-Reference Index
Part NumberManufacturer
6661 Electronic Industries Association
Related Parts
5210-00-083-0288INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-10
3930-00-145-6366INTERCHANGEABLE
BLOCK,SLIDE
3020-00-448-0992INTERCHANGEABLE
GEAR,INTERNAL
6661
6532-00-914-3069INTERCHANGEABLE
SHIRT,OPERATING,SURGICAL
X610NTZS-CA
5935-01-184-2591INTERCHANGEABLE
ADAPTER,ELECTRICAL PLUG,QUICK DI
46-619730
4820-01-225-2299INTERCHANGEABLE
PISTON,VALVE
6661
6505-01-255-9027INTERCHANGEABLE
MEXILETINE HYDROCHLORIDE CAPSULE
6661
4020-01-352-2729INTERCHANGEABLE
ROPE,FIBROUS
3316661
6515-01-372-8817INTERCHANGEABLE
HEEL CUP,ORTHOPEDIC
2970006713
5340-01-663-6109INTERCHANGEABLE
HOLDER,DOOR
777-1

Frequently Asked Questions

What is NSN 5960-00-685-8998?

NSN 5960-00-685-8998 is a Electron Tube, manufactured by Electronic Industries Association, classified under FSC 5960 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5960-00-685-8998?

NSN 5960-00-685-8998 has 1 cross-referenced part number: 6661 (Electronic Industries Association).

What NSN replaces 5960-00-685-8998?

There are 10 known substitutes for 5960-00-685-8998: 5210-00-083-0288, 3930-00-145-6366, 3020-00-448-0992 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6661?

Key specifications for 6661: Nondefinitive Spec/std Data: 6661 TYPE; Tube Type: PENTODE. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5960-00-685-8998 still in active supply?

NSN 5960-00-685-8998 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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